1. Assistant Professor, Dept. of Engineering Technology, Texas State Univ., San Marcos, TX 78666 (corresponding author). ORCID: .
2. Associate Professor, Mining Engineering and Management, South Dakota Mines, Rapid City, SD 57701.
3. Mining/Explosives Engineer, Office of Surface Mining Reclamation and Enforcement, US Dept. of the Interior, Pittsburgh, PA 15220. ORCID: .